CVE-2020-26893: Clamxav

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

An issue was discovered in ClamXAV 3 before 3.1.1. A malicious actor could use a properly signed copy of ClamXAV 2 (running with an injected malicious dylib) to communicate with ClamXAV 3's helper tool and perform privileged operations. This occurs because of inadequate client verification in the helper tool.

Affected products

• Clamxav Clamxav: from 3.0.0, before 3.1.1 (fixed in 3.1.1)

Published 2020-10-16. Last modified 2026-06-17.